KSD2420 Industrial Controls

Series:	KSD2
Part Status:	Active
Lead Free Status / RoHS Status:	--
Relay Type:	Solid State Relay
Function:	Interval
Circuit:	SPST-NO (1 Form A)
Delay Time:	0.1 Sec ~ 10 Sec
Contact Rating @ Voltage:	--
Voltage - Supply:	120VAC
Mounting Type:	Chassis Mount
Termination Style:	Quick Connect - 0.250" (6.3mm)
Timing Adjustment Method:	External Resistor
Timing Initiate Method:	Input Voltage

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Time Delay Relays are a specific type of relay that facilitates a predetermined delay after an event. Technically speaking, these relays are a type of control system which monitor a given input, and then act when the input falls within a specific time limit. It should be noted that this type of relay is not programmable, instead it is triggered when an user-defined delay passes.One of the most popular time delay relays is the KSD2420. This is a delay on operate, single-shot type relay. It is designed for the purpose of measuring a certain time period within the range of 0-15 seconds. Its accuracy is ± 10%, meaning when the timer is set to 1-second, the delay period can range from 0.9 to 1.1 seconds.It is quite intuitive that this Time Delay Relay is used in applications where predetermined time is an important factor. For instance, in industrial settings, it can be employed to delay the start-up of motor or compressor after power supply. Power fluctuations, circuit faults or trip-offs, that can cause false starts to motor or compressor, can be prevented without too much user supervision. Information systems such as optical fibre alarm systems can also utilise this to delay the disabled of optical fibre output which can otherwise lead to alarm and launching of physical intervention.The working principle of KSD2420 is actually quite simple. It consists of two main parts, the first being the timing device circuit which lets the electric current pass at a rate that is proportional to the time set by the user. To be precise, it works like a capacitor that stores a certain amount of energy, and discharges the energy gradually by running current through it. The second part of the relay is the activation device circuit which activates the relay after the set time limit is met.In terms of technical specifications, KSD2420 is quite a reliable device and features a wide range of conditions, including wide operating voltage (AC/DC 48V to 440V) and wide temperature range (from -25 ℃ to 80℃). When triggered, its contact current-carrying capacity reaches an impressive 2A and maintains electrical life for 50,000 cycles. Additionally, it is mounted in a panel or onto a DIN rail, hence installation is pretty straightforward.In conclusion, Time Delay Relays are a specific type of relay, extensively used in various commercial and industrial operations. KSD2420 is one of the most popular Time Delay Relays, due to its user-friendly design, simplicity and reliability. It works by measuring a certain time period within the range of 0-15 seconds and activates once the time limit is met. Its wide operating voltage and temperature range, high electrical current carrying, and easy installation, make it an ideal choice for use in any modern industrial environment.

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